Synthetic fiber spinning machine drive



July 21,1959

0. v. DRTINA SYNTHETIC FIBER SPINNING MACHINE'DRIVE 4 Sheets-Sheet 1 Filed May 29, 1957 July 21, 1959 0. v. DRTINA SYNTHETIC FIBER SPINNING MACHINE DRIVE Filed May 29, 1957 4 Sheets-Sheet 2 mv-m7mw.rm---- July 21, 1959 o. v. DRTINA SYNTHETIC FIBER SPINNING mourns naxvz:

4 Sheets-Sheet 3 Filed May 29, 1957 INVENTOR.

July 21, 1959 o. v. DRTlNA 2,895,234

SYNTHETIC FIBER SPINNING MACHINE DRIVE Filed May 29, 1957 4 Sheets-Sheet 4 United States Patent 2,895,284 SYNTHETIC FIBER SPINNING DRIVE Otto V. Drtina, Cleveland, Ohiov Application May 29,1957,"s'ena1'No. 662,543 Claims. or. 57-77 This application is a continuation-im art of my c'opending application Serial No. 535,053, filed September 19, 1955, now abandoned entitled Drivefor'the Rayon Spinning Machine. 7 t

In general, drive arrangement for rayon spinning machinery comprises (1) drive of a pump shaft, (2') drive of first stretching godet wheelsor stretching and elutriating reels, (3) drive of second god'et's or processing-cylinders. All three of the drives must be variable within certain limits and still have apositive ratio without slippage between the three units.

The prior art provides some solutions but their common disadvantages seem to be high initial cost and diifioulty of adjustments for difie'rentspinning speeds, different deniers, and different stretch.

It is an object of the present invention to provide simple and inexpensive means for overcoming the abovementioned difficulties.

Another object of the invention isto provide a novel interlocking drive arrangement.

Another object is to simplify-operation of pot "spinning machines by providing a pot spinning speed compensator and allowing same to adjust itself automatically to denier and speed. I

Still another object is to indicate speed, denier, stretch and pounds produced, by simple and positive means.

Other objects and advantages will become apparent and the invention may be better understood fromconsideration of the following description taken in connection with the accompanying drawings where like functioning parts are like numbered in the various figures and in which:

Fig. 1 is a schematic representation illustrating the interlocking drive according to t'he invention and for a continuous filament rayon or the like continuously spinning and processing machine;

Fig. 2 is a schematic view showing-a portion of interlocking drive and a control stand according to the invention with four indicators, additional to the different types of variable drives with their own indicators;

Fig. 3 is a schematic representation showing a selfcontained drive for a rayon g'p'ot spinning machine;

Fig. 4 is a schematic representation of my improved interlocking drive applied to "a staple fiber tow-spinning machine.

Referring first "to Fig. 1, I have shown an, axiomatic view, particularly showing the drive, for a continuous filament rayon spinning machine where it is assumed that an electric motor 1-iiseonn'ec'ted directly to a variable speed drive 2 provided with a manual control and indicating dial 3. Through an output shaft 4 and gears 5, 6, torque is transmitted from'the variable speed drive to a vertical shaft 7. As shown the verticalror king shaft 7 :carries a worm 8 to drive a loweristretching godet 'or processing reel shaft 9-ata relatively slow speed, for, example, 80 to 250141.111,

Patented July 21, 1959 A pump shaft 10 which is to have a variable range of speed of, for example, '15 to 90.r.p.m. is driven from vertical shaft 7, by way of gears 11, 12 and a variable speed device 13, preferably of the type known to the art as PIV or positively infinitely variable drive comprising opposed discs and interlocking chain drive as more fully described hereafter'in connection with Fig. 2. The output of PIV 13 is shown driving a worm 14 which in turn drives a gear 15- to operate the pump shaft 10.

A processing cylinder shaft 16 which may, for example, have speeds between 80 and 240 rpm. is driven from the vertical shaft 7 by beveled gears 17, 18, a PIV unit input shaft 19, PIV drive 20, and a worm 21 and meshing gear 22. A plurality of processing cylindefs each having parts 23, 24, and 25 (as fully described in my co-pending application Serial No. 585,116,.filed May '15, 1954) are driven each from its own auxiliary shaft 26 by a timing belt drive 27 while each shaft 26 obtains its drive from the shaft 16 through spiral gearing 28.

Viscose introduced through a conduit 29 is supplied in measured quantities by pumps 30 and delivered under pressure through candle-filters 31 to spinnerets 32, where it is submerged in flowing sulphuric acid bath in fully enclosed gravity stretch spinning equipment as more fully shown and described in my co-pending application Serial No. 603,707, of August 13, 1956. Thus, the viscose in contact with properly concentrated and heated H 80 i'sregenerated and then stretched in long stretch spinning tubes 33 to produce cellulosic yarn filament 34 which in following steps may be washed, stretched on processing reels 35 (on shaft 9), and then desulphurized, washed, bleached, washed and dried in processing cylinder 23, 24, 25 and finally twisted into a yarn and coned on cap twisting spindles 36-41 driven by belt drives 42, 42, all steps being performed in one continuous operation.

As shown in Fig. 1 a separate motor 43 and its vari-. drive 44 is used to operate this coning and rotating cap twisting spindles with quick package changing apparatus (35-41) all as described in my .patent application Serial No. 539,577, filed October 10, 1955, now abandoned and replaced by continuation-impart application Serial No. 624,649, filed November 27, 1956.

Both the PIV drives 13 and 20 have manual control knobs 49, 50, respectively, varying the output speeds individually, which speeds are indicated on dials 51 (for PIV 13) and 52 (for PIV20).

Referring now to Fig. 2, I have shown in outline interlocking drive comprising a main motor 1, and, shown partially cut away, a so-called vari-ispeed (V belt) drive indicated generally at 2, and comprising a wide V belt 53, running over two pairs of smooth conical discs 54 and 55. Discs 54 are axially adjustable by crank 3, which usually incorporates a speed indicator. The other pair of discs 55 is actuated axially by a helical spring 56 and by the belt itself. The interlocking drive of Fig. 2 also has a PIV drive 13 deriving its input from a shaft 4a (driven by the output shaft 4 of vari-speed unit 2) and delivering a speed 'variated output throughv PIV '13 output shaft 13a.

As described above in connection with Fig. 1, the first variable speed output shaft 4 may drive a vertical shaft or, as schematically shown in Fig. 2, otherwise be caused to power a shaft 4a operating as the input to PIV unit 13 and also provide power for a shaft 19- operating as the input to PIV unit 20 shown in partial section in Fig. 2 and (like unit 13) comprising a type of a variable drive manufactured in this country andwell known for its with radial grooves in the two pairs of cone-shaped discs. When one pair of discs is pressed axially together by mechanism operated by the hand knob 50, the other pair simultaneously spreads apart, causing the chain to transfer itself to a larger diameter on the .first pair, andautomatically to a small diameter on latter pair. The amount of speed variation (i.e., variation ratio) is shown on the indicator 52. 7 r

If desired there may be, as also shown in Fig. 2, an

instrument stand 60 with indicators 61-64, arranged to indicate: a

614pinning speed 62Denier 63-Stretch 64-Pounds produced per unit time To this end, and so that the respective indicators will show the spinning speed, denier being spun, amount of stretch, and pounds of yarn produced per unit of time, the indicators are connected to existing shafts and variation-ratio indicators located on the variable drives by power transmitting means so that the drive for indicator 61 is derived from unit 2 as bya chain drive 65 and shaft 19, PIV unit 20, and worm gearing 2122 and a gear train ultimately causing opposite turning of the shafts 16', 16" on which are mounted helical gear drives for the respective godets 85.

Spinning motors 86 carrying pots 105 are arranged in more or less conventional manner, but in order to enable spinning evenly and at constant tension as the cake builds up on the pot, the spinning motors have variable speeds caused by variable electrical supply. For that reason, a small varidyne unit 88 comprises an electric motor 88m arranged on the machine. The unit has a regular V belt vari-drive driving an integrally mounted frequency changer 88g. The individual spinning motors 66; indicator 62 is driven from PIV 13 indicator 51 through a chain drive 67 and helix gearing 68; indicator 63 is driven from PIV 20 indicator 52 through a chain 69 onto a shaft 70 and bevel gearing 71; and indicator 64 showing produced yarn in pounds per unit of time is driven from a shaft 72 by a fractional HP differential 73 which integrates movements of adjusting means from the spinning speed controlling vari-drive 2 and the denier de termining PIV drive .13. The differential 73 is mounted as shown in Fig. 2 between the two indicators 61-64 on shafting 66 and 72. The differential input shaft 66 is connected to the main vari-drive 2, indicator 3, and its output shaft 72 to indicator 64 showing pounds produced while the differential 73 is also driven by the denier determining PIV 13 by spur-gearing 74 meshing into a' gear mounted on the outer circumference of the differential 73 which thus operates on the principle that theoretically yarn in pounds per hour is a product of denier spun and speed of spinning.

Fig. 3 shows a self-contained drive for an entire pot spinning machine requiring no specially modified current or voltages and operable on a standard power line, and which has added advantages that all adjustments of the whole machine are reduced to very simple operations.

Similar parts are numbered as before andthere is, additionally, a compensator 75 used to enable spinning rayon at constant tension into pots, while adjusting automatically to spinning'speed and denier being spun, as hereafter described.

The machine is again assumed of a type with long spinning funnels 33 and but here plural driving shafts 16 and 16 are arranged above the machine main V belt vari-drive 2, and there are both upper and lower stretching godets. Drive 2, output shaft 4, and adjoining bevel gears drive the vertical or king shaft 7 from which branch drives go as follows:

(1) To pump shafts 10', 10" by pair of top bevel gears 11, 12 to PIV 13, and from there to each side by shafts 77, 77", through worm gearing onto said shafts 10, 10" on which are mounted gears driving spur gears 78, 78 to drive the viscose pumps 30, 30.

(2) To lower godets from king shaft 7 through a pair of lower bevel gears, a horizontal shaft 80, worm gears 8, 8 located at each side, and shafting 9, 9" on which individual helix gears arearranged to drive godets 81, 81.

(3) To processing-reel shafts 9a, 9a" on which properly spaced reels 35 are mounted. This drive is from the above-mentioned shaft 80 by a chain drive 83, intermediate shaft 84, worm gears 8', 8" and thus to shafts 9a, 9a".

(4) To upper stretching godets 85 mounted to be driven by shafts such as 16, 16" driven from the king shaft 7 through intermediate bevelgearing and short shaft are connected to the frequency changer by wiring 90 and their speeds are automatically controlled to provide constant tension on spun yarn.

A drive for traverse mechanism (hereafter described) and for the compensator 75 comprises a motor 91 integrally built into a V belt vari-drive 92 having an extension (motor speed) shaft 93 and a variable speed shaft shown driving spur gearing 94. v

The vari-drive motor speed shaft 93 is connected to another vari-drive 95 serving the traverse mechanism only. Unit 95 has an output shaft 96 equipped with a flywheel 97 and driving a variable velocity gear box 98.

Outgoingjshafts 98, 98" have on each far end a crank meshing into a standard traverse Scotch yoke mechanism (one being shown at 99) mounted on arms 100, fixed on traversing shafts 101, 101'. On such shafts there are mounted levers 102 actuating connecting rods 103 to cause a constant up and down traverse movement of spinning funnels 104 leading yarn 34 into pots 105.

Meanwhile the compensator 75 is driven from the varidrive 92- through gears 94, a shaft 106, a chain drive 107, and (inside of compensator housing) a worm gear drive 108 and a cam 109. ,Also in the housing, arranged on a short shaft, is an arm 111 with a cam-roller 112 transmitting angular movement outside the housing onto another arm- 113 to the end of which a long rod 114 or cable is attached to transmit movement onto speed control mechanism arranged on the varidyne unit 88 which, on its standard speed control shaft and behind the usual crank88c carries a spurgear 115, meshing into another spur 116 on which is firmly attached an arm 117, to the outer end of which is attached rod 114. As shown, the arm 117 is constantly urged downwardly'by a spring 118.

The three electric motors required to drive the machine are connected by wiring 120 from a central source of power 121, e.g., of three phase, cycles.

In accordance with the illustrated embodiment of Fig. 3 the following mechanism is used for the automatic control of the compensator vari-drive 92.

The main vari-drive 2 has its speed control wheel 3 arranged on a control shaft extension 3a, on top of which is arranged a disc 3b with a logarithmic cam-groove. Pump shaft PIV drive 13 has its indicator shaft extended somewhat and carrying a top disc 51b provided with a logarithmic curved groove. Radial movement produced by both cams (3b and 51b) are transmitted by racks 122, 123 onto gears on a differential 124. Outgoing'integrated movement is transmitted by a shaft 125, gear 126, and a shaft 127 to a logarithmic curved grooved disc 128 which controls the speed of the vari-drive 92.

In Fig. 4, I have schematically shown my improved drive as applied to a staple-fiber spinning machine. As in the prior figures, there is a main V belt vari-drive 2 with integrally built-in motor 1 and operated by a hand control crank 3. As shown in Fig. 4 unit 2'drives a gear train consisting of four spur gears.

Pump shafts such as 10', 10" are driven from gear train 140 through PIV drive 13 and worm-gearing 14 arranged on both sides of horizontal shafting output from said PIV 13 which' is provided with individual speedcontrol knob 49 and speed indicator 51.

Yarn receiving reels 35 on shafts suchas 9a are driven by V belt :driveZ output shaft 4b. and straight'i-tlirough PIV unit 20 (at input-speed), a'gear train.141, shaft 142; shaft 84, gearing. 8, ltosha'fts9izi, 9a.

Lower stretching .godets 81 are drivenafro'm'sha'ft 4b, PIV drive 20, worm gear drive 21,-shaft :I'G-andu'nnumbered spiral gearing to said godets 81-, and as illustrated in Fig; 4, the yarn delivering upper godets 85: (and other yarn delivering machinery 144, etc.) are also drivenby interconnection through shaft 16.

Operation 2 Operation of mechanismaccording to the invention will now-be described, first inconnection'with the embodiment shown in Figs. 1-2. For any given spinning speed, ihe control lever 3 of vari -drive 2 is set, preferably when the machine is running. Forany given denierto be spun, thecontrolknob 49 on PIV 13 is set to produce a properly corresponding pump speed and .proper initial stretch. Final stretch meanwhile is adjusted in thePIV 20 by its control hand wheel 50, the setting of whichis shown on the dial 52. For all these settings specially prepared tables can be kept at hand, so that nothing is required to be computed during the production operation.

After all the vari-drives are properly adjusted, the machine is ready to be started for spinning. When a change of spinning speed is needed, all that need be done is .to reset the control lever 3 on vari-drive 2 (without any shutdown required) and all the rest of the settings will still be correct forgiven denier and stretch. lf'a change in stretch or denier is'called for, the only manual operation required is individual adjustment of'knob 49 (unit 13) or knob 50 (unit 20). a a

Similar considerations apply in considering operation according to the embodiment illustrated in Fi'g. 3 which difiers from that of Fig. 1 mainly in having oscillating funnels for pots and the compensator mechanism (75, etc.) which integrates on the following basic principles:

V(speed of yarn) D(denier) K (a constant) so that,

log W=log V plus log D-log constant Pot (105) traversing rate can be'manually changed by the crank on vari-drive 95, for example, so that the outgoing shaft 96 will revolve at 68 to 31-5 rlp.-m. such that the range of traverse speed (assuming a stroke of 4") is 34 to 158 strokes per minute. i

As for horse power requirements, goodresults may be obtained where motor 1 for vari-drive 2- is 5 -H.P., inotor W(Weight of yarn) '91 for'traverse and compensator PIV unit 92 is 1.5

and where motor 88m for driving varidy-n-e '88 supplyin'g power for driving pots 105 (assuming fifty pots' arranged on each sideof spinning machine and requiring 89 watts of power'per unit) is H1. Use of varidyne here permits constant tension in yarn throughout the spinning of cake to minimize yarn 'breakageduring the spinning.

where cf=centrifugal force R=radius M =mass For given denier:

%=a constant K(= l57,753,600)

eg. n 8000 rpm.

5 "KXR I I l l ezg. 11 -6755 r'.p.m.

as'may readily be achieved through the variable V belt driven generator variable frequency drive of A.C. motors, thoughfof course variable voltage drive of DC. motors might be used instead. In'any event something like the compensator 75 is useful to adjust the unit 88 to provide proper range of speed.

It isalso -n'ecessary 'to consider the variation in twists per formation of cakes. The basic formula is: T (twists per meter) rLpJr'n. of balloon VS (spinning speed in meters per minute Assuming the spinning speed VS=240 m./min., oer.- tain-,back'revolutions of balloon are needed, so the yarn will be wound into the cake.

Rev. of'balloon==Rev. of pot-nb.

where n5=back revolutions; nb (empty) etc.

. (spinning speed) fl b=''" v 1rd Substituting 'nb =43'6 r.'p.m. of balloon (full) and Rev. of ba1loon=8000616=7384 empty.

6755-436=6319 full.

T;,=6319/240=, 26.3 turns/meter and Twist variations for cake=- 6% In operation, according to the embodiment of Fig. 3

for a rayon pot spinning machine, first the hand wheel 3 is set for desired spinning speed. For a given denier 'tobe spun, the control hand knob 49 on PIV 13 is set for a corresponding .pump speed. For a definite re quired stretch the upper godets speed is set on PIV 20 by. its control knob 50. Rate of traversing is set through the hand-crank on unit 95. Automatically then, according to spinning time elapsed for spinning the cake of proper weight, the compensator 75 sets itself.

. Ton-providea cake of proper shape traversing mechanism for the tunnels 104 is arranged to have substantially constant (but adjustable) linear speed with quick reversal at dead points to control the up and down movement of the funnels actuated from the motorized vari-drive 92.

Considering now the operation of the staple fiber spinning machine as illustrated in Fig. 4, there is somewhat of a ditference at the end where the yarn is subjected 'toxadditional stretch between godets 81 and 85, and individual strands 34 are thenv collected into tow, which is furtherly stretched and conveyed to the next processing equipment 144, etc.

Advantages One advantage of all the Figs. 1-4 arrangements is lower cost (e.g., because of installation and maintenance economies resulting from use of simplified V belt varidrive for main drive at one carefully chosen place where slippage is tolerable) combined with more fully automatic operation, for example, rendering unnecessary, for

any variation of spinning speed, any supplemental readjustments of godet wheels,rorpump drives or (Fig. 3 embodiment) compensator. :r,

The interlocking drives of Figs. 1+4 are fully ratiopositive withoutany slippage between branch shafts such as (10, 10"), 16 (16', 16"), and 9119a, 94'') and still all variable speed needs are fully met. The pump shaft 10 has to have range of speeds, for instance to 90 r.p.m., and is driven from the king shaft through PIV 13. The lower godet shaft 9 (Fig. 3) driven from the king shaft usually operates at 80 to 250 r.p.m. The lower processing reels 35 arranged on shaft 9a (Fig. 3) are driven with a ratio such as to provide desired prefixed stretch between lower godets and the reelsSS. The upper godet shaft (16' in Fig. 3) may have usual speeds between 80 to 240 rpm. and is driven from the king shaft 4 through PIV 20. I

But in each case (Figs. 1-4) the speed of the whole spinning machine is controlled by one hand-crank 3 on the motorized vari-drive, without changing the relation to or between all driven units and still both the initial and the final stretches and denier can be easily adjusted individually with knobs such as 49 and 50, as follows:

(1) Setting the V belt vari-drive 2 to proper required spinning speed (shown directly on dial 3).

(2) Setting the PIV drive 13 to proper denier needed (shown on dial 51). i I Y (3) Setting the PIV drive to proper required amount of final stretch (shown on dial 52).

Supervisory personnel can easily keep track of such settings by centralized direct reading of all the indicators of spinning speed, denier, stretch, and pounds produced as shown in Fig. 2 and as is very helpful in the daily checking routine of spinning department supervisors on the synthetic fiber spinning equipment.

The scope of the invention is not limited to any particular type of spinning or processing machine. ,It could be used for tire-cord yarn spinning machinery orfor Tow to Top equipment for spinning and blending natural and synthetic fibers, for while I have illustrated and described particular embodiments, various modifications may obviously be made without departing from theftrue scope of the invention which I intend to ldefine in. the appended claims.

I claim: a

1. Mechanical drive arrangement forspinning machinery comprising first, second and third processing groups, said arrangement comprising a motorized speed ratio adjustable V belt variable drive, a first power transmitting means arranged to drive the first processing group by the output of the V belt variable drive, a speed'ratio adjustable chain belt type positive variable drive, power transmitting means arranged to drive the second-proc essing group by the output of the V belt variable drive through said chain belt type positive variable drive, a second speed ratio adjustable chain belt type positive variable drive, and power transmitting means arranged to drive the third processing group by theoutput of the V belt variable drive through said second chain belt type positive variable drive, whereby to provide a minimal cost arrangement but with all processinggroups interlocked with respect to one another without slippagewhile speed of the whole arrangement may be regulated from one place and speed of each processing group may be regulated independently when necessary.;

.2. Drivearrangement as'in claim lifurther characteri'zed by='an indictaor arranged -to.be driven by two of the drives to show pounds produced per unit of time as prodnot of spinning speed i'andidenier-spun. i

3. Mechanical'vdrive" arrangement as in claim 1 further characterized by each of the three variable drives hav- 'ing a speed ratio governing and'indicatin'g shaft, and there being an indicator stand carrying four indicators for respectively showing (1) spinning speed, (2) denier, (3) stretch and (4) pounds produced per unit time, and mechanical means for driving one indicator on the stand from the V belt variable drive speed ratio governing and indicating shaft, mechanical means for driving another indicator on the stand from the first chain belt type positive variable drive speed ratio governing and indicating shaft, mechanical means for drivinga third indicator on the Stand from the second chain belt type positive variable drive speed ratio governing and indicating shaft, and mechanical means for driving the fourth indicator on the stand differentially responsive to either and both of two of the variable drives .speed ratio governing and indicating shafts. V

4. Mechanical drive arrangementv as in claim 1 further characterized by at leastone additional separately motorized adjustable speeddrive and a fourth processing group driven thereby and a compensator mechanism for adjusting the speed of said additional adjustable speed drive, and means forv actuating the compensator mechanism responsive to change of speed .of both the V belt variable drive and one of the chain belt type variable drives.

5. Interlocking drive for a rayon pot spinning machine as claimed in l comprising a motorized V belt variable speed ratio drive havingja speedsetting and indicating shaft, first process machinery shafting driven from said V belt drive without further possibility of .speed adjustinent, an adjustable speed ratio chain belt drive having a speed setting and indicating shaft, second process machinery shafting driven from said chain belt drive without further possibility of speed adjustment, another adjustable speed ratio chain belt drive having a speed setting and indicating shaft, third process machinery shafting driven from said last mentioned chain belt drive without further possibility of speed ratioadjustment, a varidrive comprising a three unit integrally-built combination of a motorizedmechanical speed variator and a generator driven thereby, said speed variator having a speed setting shaft, a plurality of pot driving spinning motors arranged to'be energized from said generator to operate at a speed corresponding to generator speed, a compensator arranged to reset the speed setting shaft of the speed References Cited in the file of this patent UNITED STATES PATENTS 1,546,133 1 .Hooper g Iulyfl4, 1925 1,958,777 Yazbik May 15, 1954 

